should be anticipated, and if seen, no greater stress should be applied to that ring. Only two of the 15 types of carabiners tested fell below the
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1 EQUIPMENT TESTING The Oregon section during 1965 has instituted a testing program of equipment. The following table presents their data obtained in the field using a Dillon Dynamo meter and an anchored come-a-long device to apply the force. In examining this and subsequent tables, one should keep in mind that failures below 2,000 pounds are probably unsafe because there will be piton failure before there is a failure of the rope. This assumes that one is using a rope that is rated to hold 4,000 or more pounds and assuming the worse effect of a knot that can reduce this to 50%. Figure 1 demonstrates the appearance of some of the ice s after testing. Note particularly numbers 23 and 24 and compare with Figure 2. In the past other tests have been done on various items of hardware. Most of these have been done in the laboratory under controlled condi tions. This is probably a better and more standardized way of testing equipment for comparative purposes. On the other hand, such tests do not take into account the variability of the material, rock or ice, in which the piton will be used. The laboratory tests do, however, indicate the stronger items and certainly these should withstand stronger forces if well placed than the weaker items. In 1961 Everett Lasher tested a number of pitons, rings, and carabiners, using a Dillon Dynamo meter rated to 5,000 pounds. His head speeds in general were inches per minute. In some cases on rings he used 0.1 inch per minute. The results of these were published in detail by Recreational Equipment, Inc. (Seattle). Everett Lasher kindly summarized his results for this report. Many of the ring pitons failed at the weld on the ring. These results confirm those reported previously by Art Lembeck who reported that ring pitons can be dangerously weak, that is, they may fail at 900-1,240 pounds. This would be adequate, however, for easy rappelling, but if one carried two types of pitons and selected the wrong one at a critical moment, a serious accident could occur. Lasher commented that all of the rings, whether rings on pitons or descending rings distorted (i.e. became oval) prior to failure so that this 6
2 should be anticipated, and if seen, no greater stress should be applied to that ring. Only two of the 15 types of carabiners tested fell below the 2,000 pound level. One was a large D-safety carabiner marked CCB. This oc curred in three out of four samples. Those carabiners that gave results above 2,000 pounds were Army aluminum (2,3 6 0 ), Bedayan aluminum (2,4 6 0 ), French Allair D-aluminum (2,3 2 0 ), Marwa Safety (3,6 0 0 ), Cassin # kg. (3,2 5 0 ), Cassin # 1 9 oval 1,000 kg. (2,9 2 0 ), Cassin # 1 9 -B o val 1,200 kg. (3,5 4 0 ), Cassin # 2 0 Large-D (3,0 8 0 ), Cassin # 2 1 Large-D Safety (4,0 0 0 ), Cassin # 2 3 oval 1,300 kg. (4,1 2 0 ), Cassin # 2 4 oval 1,800 kg. (5,000 no failure still worked w ell), Japanese D Safety Kujtu (4,0 0 0 ). (Numbers in parentheses are pounds at failure.) Failure of a rope is uncommon, however, in this report there are inci dents in which this has occurred. Some have been due to cutting by sharp rock. This is a situation that must be especially avoided particularly with nylon. Nylon can sustain extraordinary stress, but is extremely sus ceptible to cutting action. In this respect it is worth noting again the report from the U.S. Army Natick Laboratories entitled A Survey of the Deterioration of Nylon Mountain Climbing Ropes. In that report they stated that wear was an important factor and that nylon rope should be retired after 100 days of use because of wear and tear. Such use would reduce its strength by approximately 20 percent. It is essential to empha size that these are days of use in the mountains. Naturally there is a variation about this. If a rope holds a fall it probably should not be used thereafter as a climbing rope. It could be used as a fixed rope or possibly for standard rapelling. Perlon rope has also come in for criticisms, largely because its outer sheath prevents adequate inspection of the strands. In general the same standards as stated above should apply. In addition, if the perlon rope demonstrates a sharp angle or a limp quality in any segment these are indications of severe damage and that rope should be discarded. The question of the quality of a rope has also been raised from time to time. In the United States probably the best solution as to the quality of the rope that one is planning to purchase is to ensure that the rope meets U.S. Military standards. Certain accidents reported this year deserve special comment. The first is the first fatal accident reported to us as a result of building climbing. Some may argue that this is not mountain climbing in the pure sense. They are correct. On the other hand, building climbing may be compared to practice-cliff climbing. Obviously the result may be equally serious. Other accidents involved failure of a rope. In one instance the rope was severed by sharp rocks and the victim (McQuarrie) fell to his death. Whether this could have been avoided is hard to determine. One must be constantly aware of the fact that nylon rope is extremely strong under tension, but can be cut or sheared extremely easily. In another instance the rope actually broke in a fall and death resulted. In this case the perlon rope had had a moderate amount of use and had also held a body s fall. Any rope that has held a serious fall should not be used again for climbs where it may have to sustain another serious fall. Naturally the crux of 7
3 Figure 1 Deformation of ice s as a result of tests.
4 Sample No. Size and Type of Screw 1 Aust. 4½" 2 Aust. 6½" 3 Tubular Piton 4 Slotted Piton 5 Aust. 43½" 6 Aust. 4½" 7 Aust. 6½" Pounds of Angle Tension to of Pull Release Time in Ice Before Pull Air Temperature Remarks min. Unknown All tests were in the fall of the year min. Unknown min. Unknown Tube broke part way out min. Unknown Ring broke min. Unknown min. Unknown min. Unknown Samples 1-16 were tested at approx. 8,000 feet elev min. Unknown 8 Aust. 6½" 9 Aust. 6½" min. Unknown 10 Aust. 6½" min. Unknown 11 Aust. 6½" min. Unknown 12 Aust. 4½" min. Unknown 13 Aust. 4½" min. Unknown 14 Aust. 4½" min. Unknown 15 Aust. 4½" min. Unknown 16 Tubular Piton min. Unknown End distorted from driving solid ice. 17 Lag Bolt min. 33 F type 18 Lag Bolt min. 33 F Bad ice 19 Gr. Pipe min. 33 F Soft ice 20 Gr. Pipe min. 33 F Solid ice 21 Gr. Pipe min. 33 F Solid ice 22 Gr. Pipe min. 33 F Solid ice 23 Aust. ice min. 33 F 6½" 24 Aust. ice 6½" min. 33 F Samples were tested at approx ft. elev. 25 Aust. ice min. 33 F 4½" 26 Aust. ice min. 33 F 4½" 27 Aust. ice min. 33 F 2½" 28 Aust. ice 2½" min. 33 F 29 Tubular Pitoni min. 33 F
5 these comments is the word serious how serious is serious. Certainly free falls of 30 or more feet should be classified as such. The critical point in the fall is that point or section of the rope that passes around the carabiner. Here it is angulated and severe strain occurs. B ew are o f the rope that has caught one fall. It has done its duty! An incident last year occurred on Washington Column in Yosemite and involved a rappel in which Baldwin was killed. Although the exact series of events is not known, there are a number of comments that indicate that possibly Baldwin was not psychologically in tune with the climb. Whether this played a role here or not is unclear. It does, however, point up the dictum that if one is not psychologically ready for a given climb it is better not to make that climb that day. You become a menace to yourself and to others in the party. Sometimes it takes m ore courage to turn hack than to go ah ead albeit of a different sort. SAFETY COM M ITTEE, AMERICAN ALPINE CLUB, 1965 Benjamin G. Ferris, Jr., Chairman Weston, Masschusetts William L. Putnam Springfield, Massachusetts Arnold W e x le r Washington, D.C. Harold Walton Boulder, Colorado Thomas O. N evison Albuquerque, New Mexico Ross P e t r i Portland, Oregon Frank C. F ick eisen Seattle, Washington David H a rra h Riverside, California A1 Steck Berkeley, California William D a v is Anchorage, Alaska ALPINE CLUB OF CANADA Paddy Sh erm an George Austin 10 EQUIPMENT TESTING Portland, Oregon Vancouver, British Columbia
EQUIPMENT TESTING Due to poor conditions of weather the Oregon chapter was not able to complete its series of tests last year. It is anticipated that
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